AdobeAn is not defined error when trying to test HTML5 document

Right, thanks. I just realized that after posting. Sorry, I'm a newbie with Animate. At a high level I'm trying to create a test file using drag/drop. So I had this action script implemented and once I removed it, the file would test.  This is the very frist snippet of action script I was attempting to input. Any tips?

starIcon.addEventListener(MouseEvent.MOUSE_DOWN, startMove); 
function startMove(evt:MouseEvent):void {
starIcon.startDrag();
}
 
starIcon.addEventListener(MouseEvent.MOUSE_UP, stopMove); 
function stopMove(event:MouseEvent):void {
starIcon.stopDrag();
}